AD 2021-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Leonardo | S.p.a. | Airworthiness Directives; Leonardo S.p.a. Helicopters |
Unsafe Condition
A design deficiency that affects some specific main cabin floor panel installations, which could, in the case of an emergency landing, lead to failure of the affected seats, possibly resulting in injury to helicopter occupants.
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Required Actions
Removing the affected seats as identified by configuration in Leonardo Alert Service Bulletin No. 139-633, Rev. A, dated September 2, 2020, or modifying the helicopter to a different approved seating configuration.
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Compliance Time
Within 50 hours time-in-service (TIS)
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Affected Aircraft
Leonardo Model AB139 and AW139 helicopters, serial number (S/N) 31400 to 31882 inclusive, and S/N 41300 to 41570 inclusive, if a passenger cabin floor is installed, composed of 3 panels, and with the first row central seat(s) facing forward.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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